For an ideal gas, the activity co-efficient is_________________?

Related Mcqs:

1. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?

   A. V1/V2 B. V2/V1 C. V1 – V2 D. V1.V2...

2. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?

   A. Decreases B. Increases C. Remains constant D. Decreases logarithmically...

3. For an ideal solution, the value of activity co-efficient is______________________?

   A. 0 B. 1 C. 1...

4. What is the value of ln y (where y = activity co-efficient) for ideal gases ?

   A. Zero B. Unity C. Infinity D. Negative...

5. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?

   A. Nature of the liquid B. Nature of the gas C. Temperature of the liquid D. Total pressure...

6. The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?

   A. Measures the elevation in boiling point B. Is not dependent on the temperature C. Is a function of the liquid phase composition D. Measures the depression in freezing point...

7. What is the value of Joule-Thomson co-efficient for an ideal gas ?

   A. +ve B. -ve C. 0 D. ∞...

8. The activity of an ideal gas is numerically ____________ its pressure?

   A. More than B. Less than C. Equal to D. Data insufficient, can’t be predicted...

9. The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?

   A. 2M B. M/2 C. M D. M/4...

10. The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is_________________?

    A. R loge 4 B. R log10 4 C. Cv log10 4 D. Cv loge 4...